Cement-block machine.



No. 858.605. PATENTED JULY 2, 1907.

P. w. JOHNSON.

CEMENT BLOCK MACHINE;

APPLIOATION FILED JULY 12. 1906.

2 SHEETS-SHEET 1.

v Wz1n eases.

1n: nomzls PETERS co, wfusnmmou, a: c

:No. 858.605. PAT'ENTED JULY 2, 1907.

F. W. JOHNSON.

CEMENT BLOCK MACHINE. APPLICATION rum) JULY 1:. 1006.

2 SHEETS-SHEET 2.

-=?2*: 5 I Z? 52 J/ 7 /e 30 34/ U M 4 ,3 7 J a 4 7 7 020 a J; 20

/6 I? J 2/ a Wifnesses.

C4 /f M.

hire/via?! ms; NORRIS PsrERs co, wnsnmcran. A c,

. moved from the machine. Fig. 9, is a perspective FRED W. JOHNSON, OF EDMORE, MICHIGAN.

CEMENT-B LOCK MACHINE Specification of Letters Patent.

Patented July 2, 1907.

Application filed July 12, 1906. Serial No. 325,834;-

To all whom it may concern:

Be it known that I, FRED W. JoHNsoN, a citizen of i United States, residing at Edmore, in the county of Montcalm and State of Michigan, have invented certain new and useful Improvements in CementBlock Machines, of which the following is a specification.

My invention relates to improvements in cement block machines, and has particular reference to a machine, which while primarily a block machine, may also be used to manufacture bricks of plastic material.

The object of my invention is the provision of a molding machine provided with suitable dies for the manufacture of blocks of different size and shape, and which may be readily changed to operate as a brick formin machine.

A further object of my invention, is to provide a machine of simple, durable and inexpensive construction, which will be practical and efiicient for the production of blocks and bricks from plastic material.

With these and other objects in view, my invention consists of a frame supporting a'table, mold boards adapted to engage the sides and ends of the table, and crank and lever connections for closing the mold boards.

My invention further consists of a molding machine comprising certain other novel "features of construction, combination and arrangement of parts substantially as disclosed herein.

Figure 1, is a perspective view of my improved block machine with the mold closed and ready to receive the material. Fig. 2, is a similar view of the same with the mold open. Fig. 3, is a detail view of the means for closing themoldboards. Fig. 4 is a perspective view of one of the pallet boards with a'series of blocks thereon. Fig. 5, is a perspective view of the machine when used for forming bricks, the mold being open. Fig. 6, is a detail viewof one of the forms used in connection with the machine. Fig. 7, is a similar view of one of the cores which may be used in the manufacture of hollow blocks. Fig. 8, is a perspective view of one of the boards having a pallet of bricks thereon just as review of a form of hollow block which may be produced by using the core shown in Fig. 7.

Referring to the drawings in detail: The numeral 1, designates the base of the machine, which consists essentially of four rectangularly-crossed timbers, having the projecting ends 2. Mounted upon the base, are the upright posts 3, which support the upper transverse bars 4, which support the leaves or boards 5, of the table. As shown, the table top consists of two boards between which is interposed the dividing board or partition 6.

Pivoted to the projecting ends of the base timbers, arethe rods 7, which at their upper ends are secured to I the mold boards 9.

the pairs of lugs or ears 8, formed on the outer face of The inner face of the mold boards are corrugated, concaved, or in fact of any desired formation, and the mold boards when closed, are adapted to rest with their lower edge on the table. The side boards of the mold, are provided at their ends with the pairs of lugs or extensions 10, which engage the ends of the end boards of the mold. The end boards of the mold are formed with lugs 11, in which is journaled a shaft 12, and upon one end of this shaft, is secured a lever 13, formed with a cam extension 14, while upon the other end of the shaft is secured a cam 15, and these cams are adapted to engage the ends of the to lock the mold in closed position.

Journaled in the frame beneath the table, is a longitudinal rock shaft 16, provided at its outer extended end with a transverse handle or operating lever 17. Mounted upon the rock shaft, are a 'pair of collars or sleeves 18, formed each with a pair of oppositely-extending integral arms 19, in which are pivotally secured the connecting rods 20. These connecting rods, are attached at their outer ends, intermediate the length of the supporting rods 7, which carry the mold boards, 'so that by giving the rock shaft a slight turn, the mold boards are brought toward each other. A similar rock shaft 21, is journaled transversely in the frame and has mounted thereon, the crank collars 22, which in connection with the connecting rods 23, serve to close the end boards of the mold, as before described. The blocks may be made hollow or with openings therein, by placing suitable dies or forms 'in the mold, one of which is shown in detail in Fig. 6. In this particular instance the die is used for the formation of four similar blocks at the same time, and it consists of a web 24, having the end extensions or lugs 25, which are adapted to form a locking joint with slots or openings 26, in the sides of the mold. Suitable forms 27, are integral with the web and the web is further provided with a central slot 28, to form an interlocking joint with the dividing partition of the mold. It is usual to form four blocks at a single molding, but any number may be made by employing different forms of dies.

Having thus described the machine as used for male ing blocks, I will describe its use as a brick machine, as follows: A central dividing partition is used as before, and the side and end mold boards are opened, closed, and locked as described. The side boards 29 of the mold are formed with a series of parallel transverselydisposed slots or openings 30, and the dividing partition is formed with a series of complementary, alined recesses 31. Carried at the ends of the side boards of the mold, are the frames 32, formed with an interior rack 33. A shaft 34, passes through the frames and is provided at either end with a pinion 35, to engage the rack. Rollers 36, keep the pinions properly spaced in the frames, and a crank handle 37, is mounted on the extended end of the shaft for operating the same. A seside boards ries of blades of knives 38, are suitably spaced on said shaft so as to properly engage the slots in the mold board, and the blades rest on the angular extension 39 at the foot of the mold board. After the mold is closed and locked, the cranks are rotated, placing the blades into position which divide the mass into a series of properly shaped blocks or bricks. The material then in is tamped, the cranks are rotated, and blades drawn back, the machine unlocked, and the blocks or bricks removed on boards forming the leaves of the table.

From this description taken in connection with the drawings it is evident that I provide a molding machine Which accomplishes all the desired objects in a thorough and practical manner.

I claim:

1. In a molding machine, the combination with a table and frame, mold boards pivotally secured to the base of the frame, crank and lover connections for closingthe mold boards, of transverse shafts journaled in the end mold boards carrying cams to engage the ends of the side mold boards for locking the boards to form a mold.

2. In a molding machine, the combination with a table and frame, of mold boards pivotally supported on the frame, shafts journaled in the frame, cranks on said shafts having connection to close the mold boards, means for locking the mold boards and movable knives carried by the mold boards.

3. In a molding machine, the combination with a table and table frame, rods pivoted to the base of the frame. mold boards supported by said rods, shafts mounted in the frame, of cranks having connection with the support;- ing rods to close the mold boards, and a cam shaft journaled in the end mold boards carrying cams to lock the mold.

at. In combination, a table and frame, mold hoards pivotally supported on the frame, crank and lever connections for closing the mold hoards, means for locking, the mold boards, and parallel knives carried by the opposite pair of mold boards, and rack and pinion connections for advancing the knives.

5. A molding machine comprising a table, side and end mold boards to engage the table, two of the oppositely disposed mold boards each carrying gear frames, knives adapted to be advanced through openings in said mold boards, shafts passing through the kniv ears on the ends of the shafts meshing with the rack frames. and means for turning said shafts to thereby advance the knives.

In testimony whereof I :lilix my signature in presence of two witnesses.

FRED \V. JOHNSON.

Witnesses:

Ronnirr MCCAY, MARTIN ANDERSON. 

